Michael, Sally: - Sally Michael is a cofounder of Truth78 and the author of a number of books and curricula for the spiritual development of children, including seven titles in the Making Him Known series. For sixteen years, Sally served as minister for children at Bethlehem Baptist Church in Minneapolis, under the leadership of John Piper and her husband, David. Sally and David live in Indianapolis. They enjoy spending time with their daughter Kristi, daughter Amy and her husband Gary, and their grandchildren.